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Title: Gold-patched graphene nano-stripes for high-responsivity and ultrafast photodetection from the visible to infrared regime

Journal Article · · Light, Science & Applications
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  1. Univ. of California, Los Angeles, CA (United States). Electrical Engineering Dept.

Graphene is a very attractive material for broadband photodetection in hyperspectral imaging and sensing systems. However, its potential use has been hindered by tradeoffs between the responsivity, bandwidth, and operation speed of existing graphene photodetectors. Here, we present engineered photoconductive nanostructures based on gold-patched graphene nano-stripes, which enable simultaneous broadband and ultrafast photodetection with high responsivity. These nanostructures merge the advantages of broadband optical absorption, ultrafast photocarrier transport, and carrier multiplication within graphene nano-stripes with the ultrafast transport of photocarriers to gold patches before recombination. Through this approach, high-responsivity operation is realized without the use of bandwidth-limiting and speed-limiting quantum dots, defect states, or tunneling barriers. We demonstrate high-responsivity photodetection from the visible to infrared regime (0.6 A/W at 0.8 μm and 11.5 A/W at 20 μm), with operation speeds exceeding 50 GHz. Our results demonstrate improvement of the response times by more than seven orders of magnitude and an increase in bandwidths of one order of magnitude compared to those of higher-responsivity graphene photodetectors based on quantum dots and tunneling barriers.

Research Organization:
Univ. of California, Los Angeles (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0016925
OSTI ID:
1510255
Journal Information:
Light, Science & Applications, Vol. 7, Issue 1; ISSN 2047-7538
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 135 works
Citation information provided by
Web of Science

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Laser Fabrication of Graphene‐Based Flexible Electronics journal August 2019
Laser Programmable Patterning of RGO/GO Janus Paper for Multiresponsive Actuators journal August 2019
Engineering Optical Absorption in Graphene and Other 2D Materials: Advances and Applications journal July 2019
Polariton Photonics Using Structured Metals and 2D Materials journal October 2019
Graphene as a Transparent and Conductive Electrode for Organic Optoelectronic Devices journal June 2019
Mixing Properties of Room Temperature Patch‐Antenna Receivers in a Mid‐Infrared (λ ≈ 9 µm) Heterodyne System journal December 2019
Fabrication of highly stable CdS/g-C3N4 composite for enhanced photocatalytic degradation of RhB and reduction of CO2 journal November 2019
Hybrid plasmonic gold-nanorod–platinum short-wave infrared photodetectors with fast response journal January 2019
Synthesis of bismuth sulfide nanobelts for high performance broadband photodetectors journal January 2020
High responsivity graphene photodetectors from visible to near-infrared by photogating effect journal November 2018
Two-dimensional infrared and terahertz detectors: Outlook and status journal June 2019
Illumination study of a quantum MIM diode for the mid-infrared journal August 2019
Graphene-based polarization-sensitive longwave infrared photodetector journal August 2019
Panchromatic organic photodetectors with SubPc as a non-fullerene acceptor journal September 2019
In2S3 Quantum Dots: Preparation, Properties and Optoelectronic Application journal May 2019
Graphene-based materials in the infrared and terahertz detector families: a tutorial journal January 2019
Ultra-compact integrated graphene plasmonic photodetector with bandwidth above 110 GHz journal February 2020
Theoretical Study of Plasmonically Induced Transparency Effect in Arrays of Graphene-Based Double Disk Resonators journal March 2019
A Grain Boundary Regulates the Friction Behaviors between Graphene and a Gold Substrate journal August 2019
Electronic and Thermal Properties of Graphene and Recent Advances in Graphene Based Electronics Applications journal March 2019
Two-Dimensional Hybrid Composites of SnS2 Nanosheets Array Film with Graphene for Enhanced Photoelectric Performance journal August 2019
A Review on the Development of Tunable Graphene Nanoantennas for Terahertz Optoelectronic and Plasmonic Applications journal March 2020
Unified benchmarking and characterization protocol for nanomaterial-based heterogeneous photodetector technologies preprint January 2020